Method test_chebsub

numpy/polynomial/tests/test_chebyshev.py:75–83

(self)

                assert_equal(trim(res), trim(tgt), err_msg=msg)

    def test_chebsub(self):
        for i in range(5):
            for j in range(5):
                msg = f"At i={i}, j={j}"
                tgt = np.zeros(max(i, j) + 1)
                tgt[i] += 1
                tgt[j] -= 1
                res = cheb.chebsub([0]*i + [1], [0]*j + [1])
                assert_equal(trim(res), trim(tgt), err_msg=msg)

    def test_chebmulx(self):
        assert_equal(cheb.chebmulx([0]), [0])